Question about 1989 Chevrolet Caprice

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Car is idiling fast,how can this be adjusted?

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At the base of the throttle body-- is an air idle control
valve with wires,take out & clean

No better ---replace it

Posted on Nov 29, 2012

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Posted on Jan 02, 2017

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1 Answer

The idiling i to high how do i locate it to adjust it


Most vehicles today have no idle adjustment capability. It is controlled by the PCM. That said, if the idle is too fast, then there are usually other problems causing it. A bad idle air control solenoid (IAC) or Throttle Position Sensor (TPS) can be the cause, as could an intake manifold leak, or on vehicle with a MAF sensor, air leaks between the MAF and the intake manifold. Not all cars have all of these different devices. We would need more information to narrow down the possibilities.

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Idiling fast


if no check engine light is on..you probably have a vacuum leak...more than likely a vacuum hose connection is loose or you have a split in 1 or more vacuum hoses. check and replace as necessary.

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Hey there jonablac,
well if it starts and then takes a minute to start up all the way from trying to die or cut out the you need to turn up you engines idle speed or if it starts then dies and won't start again wait a couple of minutes and then try to start it back up beacuase it could mean your engine has gotten a little flooded or you don't have you vehicle's engine idiling speed adjusted fast enough.

I hope this helps,

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1 Answer

How do I ajust idiling on 97 malibu


There is no idle adjustment to be made on your car. The throtle position sensor takes care of it. The voltage at the tps at idle should be around 1 volt. if it's out of range check wireing if wireing checks out replace tps and idle should be correct.

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Hate to tell you this but sounds like the problem is a vacuum leak. This will make the engine rev. Check all the vacuum lines before making any adjustment. Have to dig out some of my old books to find factory settings for that carb. Good luck and I will try to find in case you need them to restore carb settings.

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My caprice runs to fast...


pretty sure that year is throttle body fuel injected if so check idle air control switch may be stuck or passage may need to be cleaned cylinder shape located on throttle body but first check all vacuum hoses for leaks or cracks

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1 Answer

1987 4x2 idling really fast when cold and stalling


Its idiling fast cause ur choke is on it mabey broke and flooding the engine check your choke valve

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Chyrsler sebring lxi 1995 2.5 v6 24 valve


ok this sounds easy when you ran the vehicle the computer controled the idiling motor now that you replace the idiling motor the computer hasnt been reset to except the new parameters
once you reset computer this should bring the idle back down to its specified idle
you can also adjust back of gas pedel the idle cable and on the throttle body by the idling screw

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